Gas or vapor burner



(No Model.)

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OF PITTSBUBG, PENNSYLVANIA.

GAS OR VAPOR BURNER.

SPECIFICATION forming part of Letters Patent No. 233,065, dated October12, 1880.

Application filed July 10, 1880.

To all whom it may concern:

Beit known that I, CHARLES F. BURNAP, of Allegheny, county of Allegheny,State of Pennsylvania., have invented or discovered a new and usefulImprovement in Gas and Vapor Burners; and I do hereby declare thefollowing to be a full, clear, concise, and exact description thereof,reference being had to the accompanying drawing, making a part of thisspecification, which represents a vertical sectional elevation of myimproved gas and vapor burner.

My present invention is designed more especially for burning gas orgasoline vapor in railway-cars, where the irregular motion of the carand drafts of air make it especially difficult to secure a stron gsteady light with these materials.

My improved burner is constructed as follows: Within a metallic case, A,having, by preference, a double conical form, as shown, are arranged twoconcentric tubes, a b, the smaller tube, a, being arranged within thelarger, b, and extended from the bottom plate, A', of the outer caseupward through the outer tube, both terminating together near the top oftheburner. The outer tube, b, bears against the perforated flange A2 ofthe case, and its foot or lower end rests in a socket, B, which issoldered or otherwise secured to the outer surface of tube a. Theposition of this socket is abreast of or in the plane of the arm B2 ofthe case and some distance from the base A.

The gasor vapor supply is introduced to the annular space between tubesa b as follows: An opening, c, leads from the inner face of the socketbelow the tube b, through an enlargement, c', within which is made athreaded socket, c2. A tubular nipple, O, has its inner end threaded andscrews into this socket, and on its outer end is formed a similarthread, which screws into the interior thread of hollow or tubular armB2. The bore e3 of this nipple coincides with the opening c, and opensinto a supply-pipe, D, which leads from any convenient source of vaporor gas supply. The inner end of the nipple C and the abutting face inthe socket c2 are made to fit tightly, so that as the nipple is screwedto place it will draw tightly on the socket B and make a tight joint inthe (No model.)

socket without thenecessary use of gaskets or packing. This nipple alsoserves as an additional support for the socket B and tubes a b. At theupper end of these tubes is secured a ring, a, which closes the annularspace between the tubes. Through this ring are made a series ofperforations, h', through which gas or vapor passes upward in jets.These jets are burned as they escape from the perforations, and tosustain and perfect such combustion air is supplied from both the innerand outer sides as follows: Inlet-perfbrations e, in any desired number,are made in the lower cone of case A, below the arms B2. Part of the aireutering through these perforations may take a downward or lateralcourse through perforated diaphragm E, and through perforations a2 inthe lower end of tube a to the interior of this tube, and thence upwardto the inner surface of the iiame or jets, and also a part of theiniiowing air may pass directly upward between socket B a-nd case A,through perforated diaphragm E, and thence upward outside of the tube bthrough the perforated flange A2 to the outer surface of the flame orjets. These diaphragme E and i" are secured in any convenient way acrossthe space between the outer case, A, and the under and upper edges,respectively, of the socket-piece B. Their function or purpose is tosecure a steady uniform flow of air by preventing outside pulsations orirregularities in the air-currents from transmitting their iniiuence tothe air at the burner or point of combustion.

Above the case A, and inclosing the upper end of tubes a b, is aglobe-shaped support and air-detlector S. Itis secured in place byslippling over the end of A. The central swell or enlargement S affordsroom for expansion of air caused by heat from the iiame or heated tubes,and thereby a uniform velocity of air is secured. For convenience inconstruction, this deliector is made in two parts, s and s', which maybe joined in any convenient way, as shown at the belt of greatestenlargement. A seat or ange, s2, is made around the base of the upperpart, s, for receiving and supporting a chimney. The upward convergingcurve of this cap s deiiects or directs the outer current of air againstand into roo the flame, and thereby better promotes combustion.

Above the tubes a Z, in their axial line, is a button, It, fordeliectiug the llame outward somewhat, so as to give it a rounded oroval form. This button is supported on a stem, r, which restsits lowerend in a socket, 1^',in base A. Toward its upper end a spider, It',supports the stem in the axial line of the tube. This button may bedispensed with, however, if desired, and still obtain very satisfactoryresults with the burner.

The arms B2 may be used for attaching or supporting the burner in placein a car orother place of use, and, while I have especially designed myimproved burner for use in railwaycars, yet it may be used withadvantage in buildings or other places for burning gas or hydrocarbonvapors for illuminating purposes.

I have found by extended experiments on railway-cars not only that asteady and clear light is secured by this burner from gas or gasolinevapor, but also that a very stronglight is also secured, which exceedsthat of the Argand burner nearly or quite threefold.

I claim herein as my inventionl. In a vapor or gas burner, thecombination of two tubes a b, arranged one within the other, with anannular space between the two, a gas or vapor supply passage leading tosuch annular space, a perforated discharge at the upper end of thespace, an air-supply through the interior of the inner tube, and anair-supply around the exterior of the outer tube, with outer case, A,and upward extension S, suchV extension having an annular swell orenlargement, S', therein below the upper extremity of the tubes a b,substantially as set forth, whereby an ai r-expan sion chamber is formedfor preserving a uniform rate of flow in the outer and innerair-supplies.

2. In combination with case A, having a tubular arm, B2, thereon, theinner and outer tubes, a b, socket B, secured to tube a and receivingthe end of tube b, and tubular nipple (l, adapted to screw into both armB2 and socket-piece B, and afford thereby a supplypassage to the spacebetween the tubes a b, substantially as set forth.

3. The combination of tubes a, and b, socketpiece B, case A, perforateddiaphragms E E, (letlector or cap S, the same being arranged, asdescribed, with a gas or vapor supply passage to the space between thetubes, air supply opcnin gs or perforations through the outer case,between the diaphragms and airopenin gs or perforations through pipe a,below the lower diaphragm, substantially as and for the purposes setforth.

In testimony whereof I have hereunto set my hand.

CEAS. F. BURNAP.

Witnesses R. H. Wnrr'rLnsnY, (l. L. PARKER.

